Vibration sensor



FIG. 1 is a front perspective view of the vibration sensor, according toan embodiment of the new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a rear view thereof; and,

FIG. 8 is a bottom view thereof.

CLAIM The ornamental design for a vibration sensor, as shown anddescribed.